Making a seven layered density column is a fun and easy science experiment. Have you
ever noticed two substances that don't mix together - like oil and water. This is explained
by the different densities of the substances. Both substances have the same amount of
volume, however one has more mass or weight than the other. To demonstrate this we
can make a seven layer density column.
Materials Seven Layer Density Column
- Maple Syrup
- Water (with a tad of food coloring)
- Karo Syrup
- Liquid Dish Soap (colored)
- Rubbing Alcohol
- Vegetable Oil
- Lamp Oil
- Turkey Baster
- Bath Tints or Food Coloring
- Measuring Cup
Process To Make A Seven Layer Density Column
1) Get your measuring cup out and pour 7 ounces of each liquid into a separate cup.
2) Use food coloring to make each liquid more visible.
3) Add the honey first to the bottom of your cylinder.
4) Next use the Turkey baster to add the following liquids in this order: Karo Syrup, Maple
Syrup, Liquid Dish Soap, Water, Vegetable Oil, Rubbing Alcohol, Lamp Oil.
5) Be careful when making the layers. Gently, fill the baster with liquid and disperse it on
top of previous liquid without splashing it on the side of your cylinder or glass. Gently
disperse it right in the middle for best effect.
Watch Seven Layer Density Column Video:
The Science Behind The Seven Layer Density Column
The greater the weight a substance has, the greater it's density is. All substances don't
weigh the same. When we layer liquids that have lower density on top of liquids with
higher density, the less dense ones float on top. If you were take a scale and weigh each
of the substances used in the seven layer density column you would find each weighs
differently (make sure you measure out equal amounts before putting on a scale (7
ounces). Now go grab some friends and make a seven layer density column!
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